header {
    height: 100px;
    background: rgb(95, 51, 93);
    display: flex;
  }

  .react {
    width: 200px;
    height: 200px;
    float: left;
    margin-right: 20px;
    background: url('../img/1.png');
    background-size: cover;
  }
  .vue {
    width: 200px;
    height: 200px;
    float: left;
    background: url('../img/vue.png');
    background-size: cover;
     /* CSS3样式 */
    transform: translateX(100px);
  }